Is the trait in the pedigree below dominant or recessive?

The trait is recessive.

Explanation:

A dominant trait is the trait which suppresses the affect of the other recessive allele. A recessive trait is the trait whose allele is masked by the dominant allele.

In the following pedigree, we can see that a trait occurs only after 2 progenies. This is because the trait was recessive.

the right answer is it connects amino acids

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.